nasm -f elf ./start.S -o ./start.o
ar rcs simple_crt.a ../build/string.o ../build/syscall.o \
 ../build/stdio.o ../build/assert.o ./start.o
gcc -Wall -c -fno-builtin -W -Wstrict-prototypes -Wmissing-prototypes \
    -Wsystem-headers -I ../lib/ -I ../lib/usr -I ../kernel -I ../lib/kernel -I ../fs -I ../thread prog_arg.c -o prog_arg.o -m32
ld prog_arg.o simple_crt.a -o prog_arg -m elf_i386
dd if=prog_arg of=/home/bon/test/linux/learnlinux/hd60m.img \
   bs=512 count=15 seek=300 conv=notrunc